Cab extension



FIG. 1 is a left side perspective view of a cab extension showing my newdesign, the cab extension being attached to a truck which is shown inbroken line for illustrative purposes only and forming no part of theclaimed design;

FIG. 2 is a perspective view of the cab extension;

FIG. 3 is an elevational view of the front thereof;

FIG. 4 is an elevational view of the rear thereof;

FIG. 5 is an elevational view of the left side thereof;

FIG. 6 is an elevational view of the right side thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The ornamental design for a cab extension, as shown.